Lamp and heater



March 23, 1937. J. s. SCHARF LAMP AND HEATER Filed May 4, 1932 VENTORPatented Mar. 23, 1937 UNITED STATES PATENT OFFICE 11 Claims.

This invention relates to an improvement in electrical apparatus, andthe same has for its object to provide an article which may be used forilluminating purposes or for heating, toasting or cooking. The articlemay also be used simultaneously both for illuminating and heating,toasting or cooking.

My invention consists of a novel construction y of a combined electricheater and electric table 10 lamp operative in the same circuit, whereinI utilize the hollow base of the lamp structure as an electric heater,so that when the lamp is inverted the heater can be operated to heat anarticle or toast bread or heat the room. 15 A further object of thisinvention is to construct a table lamp with a hollow base, the latterbeing utilized as a heating compartment and adapted to operatesimultaneously with the lamp.

A further object of this invention is to construct a table lamp with ahollow base, the latter being utilized as a heating compartment, andmeans adapted to connect with the heating device to complete the circuitand arranged in such a manner as to prevent the operation of the heaterwhen lamp and heater are resting in a normal position.

A further object of this invention is to provide a lamp with a frameworksurrounding and projecting above the bulb, the framework being adaptedto support the lamp when inverted and permit slices of bread beingplaced underneath and around the bulb for warming after being toasted.If desired the power of bulb can be regulated by a rheostat.

A further object of this invention is to provide a lamp with a hollowbase, wherein the base isr formed with a setback which functions as asupport for a heating unit. The entire heating unit and lamp are heldtogether by a single screw.

With the foregoing and other objects in view the invention consists inthe combination and arrangement of parts hereinafter described andclaimed, andwhile the invention is not restricted to the exact detailsof construction illustrating a practical embodiment thereof reference ishad to the accompanying drawing in which like reference charactersdesignate the same parts in the several views, and in which:

Figure 1 shows a view of lamp and shade.

Figure 2 shows a bottom view of lamp disclosing the heater.

Figure 3 is a vertical view of lamp in inverted position with basepartly in section.

-Figure 4 isla detail of switch member.

Figure 5 is a cross` section of Figure 4, on the line 5 5 somewhatenlarged.

Figure 6 is a diagrammatic view of the wiring arrangement.

Figure 7 is a modified method of arranging the switch.

This invention is an improvement of the device shown and described inPatents #1,550,100 and #1,817,040.

Referring to the drawing, the numeral I, denotes a standard for a lamphaving its lower portion formed into a hollow base 2. The upper part .ofthe standard I, is provided with a neck 3, of smaller diameter than thestandard I, thus producing the step 4.

A sleeve 5, somewhat longer than the neck 3, is arranged to be tightlyfitted on the neck 3, so as to rest on step 4. To the sleeve 5, thereare aflixed several supports 6. To the other end of the supports thereis fixed by welding or otherwise a ring 1.

Figure 3 shows the device in an inverted position with shade removed. Inthis position the base 2, is utilized as a heater. The base 2, isprovided with a ridge 8, which supports an asbestos board 9. Ar grid I0,provided with an outer ring I I, is adapted to t so that the ring isdirectly over the ridge B.

The grid I0, has a plurality of wires I2, one end attached to the ringII, and the other end to a perforated washer I3.

The asbestos board 9, is provided with a central perforation I4, and hasattached to it a heating unit made of nickel chromium or resisting wireI5, and is held to the board 0, by terminals I6 and I1, and by hooks I8,held to the asbestos 9, by means of rivets I9.

The terminal I6, comprises a screw 20, and a washer 2I, holding down oneend of the resistance wire I5, and held tight by a nut 22, on the backof the board 9. The terminal I'I, is arranged oppositely to terminal I6,in that, the head of the screw 23, enters through the back of theY board9; and holdsfthe other end of the resistance wire I5, by nut 24. Thescrew 23, projects considerably above the resistance wire I5, forpurpose to be described later.

The grid I0, is held in place by means of a screw 25, over a. washer 26.A mica washer 21, under washer I3, is provided against short circuits,also a lava sleeve 28, surrounds the screw 25, for similar protection.threaded into a cap 29, and tube 30. The tube 30, has a side opening 3|.The other end of tube 30, is threaded to receive the lower end The screw25, isy

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of socket 32, which is placed over the sleeve 5. It is thus seen that bytightening the screw 25, it will draw the socket 32, down against thesleeve 5, and thereby hold the parts of the lamp tightly together.

The wiring arrangements are as follows: A pair of wires 3S, and 34, areadapted to enter the base of the lamp 2, through a perforation 35protected by a bushing tube 30, at 3i, and are attached to the socketconnectors 36', and 3l'. A wire 38, is attached to the screw 2b ofterminal i5, and held by nut 39. The other end of the wire 38, isattached to wire 33 at the junction Ll. A wire lli, is attached to wire35, at junction 42, and then passes through a perforation 3, in theboard 9, which is protected by a grommet lit. All wires used in theassembling are asbestos covered.

The other end of the wire lil, is provided with a switching member1?.-5, cooperating with screw 23, in forming a switch. The wire di, isbared at the end and enters a porcelain tube 46, through an opening lll,at one end, said tube being completely open at the other end d8. rEhebare wire is attached to a spring clip 49, at the screw 5G. in order tohold the clip tightly within the tube 136, a portion oi the clipstructure 5G' is thinned and turned atwise so that it is in contact withthe rough inner porcelain in the tube 4E, and when the clip is forcedin, it will stay on account of the friction.

The switch member @5, is arranged to t over the screw of terminal il.The t can either be a tight t or preferably a loose t and depending onthe tension produced in the wire 4l, where the tendency is to straightenout at the loop 5l, to effect the proper contact.

As shown in Figure S, the switch member 4-5, projects beyond the base 2,this is for the purpose of forming an interference with the setting ofthe lamp with the heater in action, in other words before the lamp canbe normally set the switch member 5, must be disconnected.

Of course the switch member Q5, could be made small and only the wire4l, project beyond the base 2, which would also serve as an indicatorand in a lesser degree interfere with the setting of the lamp normallywhen the heater is in operation. When the switch member i5, is not inuse it is arranged to be placed under a wire l2, of the grid EG.

The socket may be of the ordinary key type 4l', or if desired it may beof the type known as the Dimalite which is of the rheostat typeillustrated diagrammatically in Figure 6 at 48.

The bulb 52, is arranged to project so that its tip 53, should be somedistance from the ring so that a plate M, with toast can be placedbeneath. Slices of toast 55, can also be placed so as to lean on thebulb. If the rheostat type of socket is used the degree of heat can beincreased so as to keep the toast very warm.

A shade EL3, with ordinary spring clip which springs on the bulb is usedas described in Patent #1,817,040.

Figure 7 illustrates an alternate method of switching arrangement thatleaves the base area clear of any switches or obstructions. In thismodiiied form the heating unit and asbestos board are similarlyarranged. Within the hollow portion of base there is placed a. verticalinsulation board 56, on which a rotatable metal bar 57, in electricalconnection with the resistance unit is pivoted and held by spring 58. Abar 59, in contact with the other portion oi the electrical circuit isalso placed on the board 56. A hooked arm 6D, attached to and insulatedfrom bar 5l, is provided with a hook El. In operation when the heater isin use, the arm 60, is pulled out till the hook SI, is caught on themetal 62, and is so arranged that the bar 5l', is in contact with bar59, and at that time the end of the arm Sil, projects beyond the base oflamp, and accordingly will interfere with the normal setting of lampwhen the heater is in operation.

What I claim ierl. An electric lamp having a base formed into a hollowcompartment provided with an open face, an electric heater mountedwithin the base, means for supporting the lamp in an inverted positionthereby exposing the heater, said heater comprising an insulating board,a resistance heating wire held on said board, a terminal at each end ofsaid wire, one oi said terminals projecting above the board towards theedge of the open face, a wiring arrangement within the hollowcompartment, two wires arranged to connect with the terminals, one ofsaid wires connected to one ci the terminals below the board within thecompartment, the other wire penetrating the said board provided withmeans adapted to function as a connecting switch with the projectingterminal above the board, said means projecting above the edge of theopen face when the switch is on.

2. An electric lamp having a base, an electric heater mounted within thebase, means for supporting the lamp in an inverted position therebyexposing the heater, a switch arranged within the base, said switchcomprising a plurality of members operatively connected to the heater,one of said members arranged to project beyond the edge of the base soas to interfere with the normal setting of the lamp when the heater isin operation.

3. An electric lamp having a base, an electric heater mounted within thebase, means for supporting the lamp in an inverted position therebyvexposing the heater, a switch arranged within the base, said switchcomprising a plurality of members operatively connected to the heater,one of said members being provided with a circuit wire that projectsbeyond the edge of the base so as to interfere with the normal settingof the lamp when the heater is in operation.

4. An electrclamp having a base, an electric heater mounted within thebase and surrounded by the lower portion or the base, means forsupporting the lamp in an inverted position thereby exposing the heater,a switch arranged within the base comprising a plurality or" membersoperatively connected to the heater, one of said members arranged toproject beyond the edge of the lower portion of the base when heater isin operation, a grid of several wires spanning the resistance wire andspaced above the board, enabling any one wire to retain the projectingswitch member when heater is not in operation.

5. The combination oi an electric lamp and an electric heater, mountedrespectively at opposite ends of a standard, a switch comprising aplurality of members operatively connected to the heater, means forsupporting the standard in a normal position as in an ordinary lamp,means for supporting the standard in an inverted position, one oi saidswitch members arranged to interfere with the normal positioning ofstandard when the heater is in operation.

6. The combination of an electric lamp and an electric heater, mountedrespectively at opposite lll ends of a standard, a switch comprising aplurality of members operatively connected to the heater, means riorsupporting the standard l in a normal position as in an ordinary lamp,means for supporting the standard in an inverted position, one of saidswitch members being provided with means arranged to interfere with thenormal positioning of standard when the heater is in operation.

'7. An electric lamp having a base formed into a hollow compartmentprovided with an open face, an electric heater mounted within the base,means for supporting the lamp in an inverted position thereby exposingthe heater, said heater comprising an insulated board, a resistance orheating wire held on said board, a terminal at each end of said wire,one of said terminals projecting above the board towards the edge of theopen face, a wiring arrangement within the lamp base, one of said wiresconnected to one terminal and the other wire penetrating the said boardand connected with an insulated metallic receptive means for saidprojecting terminal thereby functioning as a switch.

8. An electric lamp having a base formed into a hollow compartmentprovided with an open face, an electric heater mounted within the base,means for supporting the lamp in an inverted position thereby exposingthe heater, said heater comprising an insulated board, a resistance orheating wire held on said board, a terminal at each end of said wire,one of said terminals projecting above the board towards the edge of theopen face, a wiring arrangement within the lamp base, one of said wiresconnected to one terminal and the other wire penetrating the said boardand forming a loop'and connected with an insulated metallic loosereceptive means for said projecting terminal, the elasticity in saidwire about said loop forcing a positive contact between said receptivemeans and projecting terminal.

9. A heating unit set in a hollow compartment having an open face, saidheating unit comprising an insulating board, an opening in said board, acurrent carrying wire terminating in an electric connecting plug abovesaid board passing through said opening into said compartment, aresistance wire held on said board, a terminal at each end of said wire,one of said terminals projecting below the board into said compartmentand there connecting to a complementary current wire, the other terminalprojecting above the board towards the open face and adapted to form a'connecting member with said plug.

l0. In a lamp, a base, a socket and an intervening member to support thelamp in an inverted position held tight between said socket and base, aheater arranged within the base, comprising an insulating board restingagainst the sides of the base, a resistance wire on said insulatingboard, a grid member spanning said resistance wire and holding saidboard against the base, and means for mechanically connecting the gridto said socket.

11. A heater, comprising a hollow compartment having a shoulder, aninsulating board within the compartment and resting on said shoulder, a

resistance wire on said board with terminals projecting above and belowsaid board, a grid member comprising radiating wires spanning saidresistance wire and means for holding said board against said shoulder,a set of electric wires for furnishing current entering said compartmentone of said wires being attached to the lower terminal of saidresistance wire, the other wire projecting through an opening in saidinsulating board and being attached to a porcelain covered attachmentplug, said plug being adapted to coact with the other terminal thatprojects above the board for completion of the circuit and when not inuse the plug being adapted to fit between one of said wires of the gridand the! insulating board.

JACOB STUART SCHARF.

